![London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Alexander Zverev (GER) plays a backhand shot in his match against Daniil Medvedev (RUS) - Editorial Use Credit: Action London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Alexander Zverev (GER) plays a backhand shot in his match against Daniil Medvedev (RUS) - Editorial Use Credit: Action](https://c8.alamy.com/comp/2A9HGHD/london-uk-15th-nov-2019-o2-arena-london-england-nitto-atp-tennis-finals-alexander-zverev-ger-plays-a-backhand-shot-in-his-match-against-daniil-medvedev-rus-editorial-use-credit-action-plus-sports-imagesalamy-live-news-2A9HGHD.jpg)
London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Alexander Zverev (GER) plays a backhand shot in his match against Daniil Medvedev (RUS) - Editorial Use Credit: Action
![Tennis - ATP Finals - The O2, London, Britain - November 14, 2019 Switzerland's Roger Federer in action during his group stage match against Serbia's Novak Djokovic REUTERS/Toby Melville Stock Photo - Alamy Tennis - ATP Finals - The O2, London, Britain - November 14, 2019 Switzerland's Roger Federer in action during his group stage match against Serbia's Novak Djokovic REUTERS/Toby Melville Stock Photo - Alamy](https://c8.alamy.com/comp/2ED6YPC/tennis-atp-finals-the-o2-london-britain-november-14-2019-switzerlands-roger-federer-in-action-during-his-group-stage-match-against-serbias-novak-djokovic-reuterstoby-melville-2ED6YPC.jpg)
Tennis - ATP Finals - The O2, London, Britain - November 14, 2019 Switzerland's Roger Federer in action during his group stage match against Serbia's Novak Djokovic REUTERS/Toby Melville Stock Photo - Alamy
![London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Daniil Medvedev (RUS) plays a forehand shot in his match against Alexander Zverev (GER) - Editorial Use Credit: Action London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Daniil Medvedev (RUS) plays a forehand shot in his match against Alexander Zverev (GER) - Editorial Use Credit: Action](https://c8.alamy.com/comp/2A9HGHM/london-uk-15th-nov-2019-o2-arena-london-england-nitto-atp-tennis-finals-daniil-medvedev-rus-plays-a-forehand-shot-in-his-match-against-alexander-zverev-ger-editorial-use-credit-action-plus-sports-imagesalamy-live-news-2A9HGHM.jpg)
London, UK. 15th Nov 2019. O2 Arena, London, England; Nitto ATP Tennis Finals; Daniil Medvedev (RUS) plays a forehand shot in his match against Alexander Zverev (GER) - Editorial Use Credit: Action
![Novak Djokovic On Roger Federer: 'He's A Role Model, Even For Me' | Nitto ATP Finals 2019 | ATP Tour | Tennis Novak Djokovic On Roger Federer: 'He's A Role Model, Even For Me' | Nitto ATP Finals 2019 | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2019/11/14/22/20/djokovic-london-2019-thursday-reaction.jpg)
Novak Djokovic On Roger Federer: 'He's A Role Model, Even For Me' | Nitto ATP Finals 2019 | ATP Tour | Tennis
![Arena. London, UK. 16th Nov, 2019. Nitto ATP Tennis Finals; Stefanos Tsitsipas (Greece) celebrates as he breaks serve against Roger Federer (Switzerland) in the second set - Editorial Use Credit: Action Plus Arena. London, UK. 16th Nov, 2019. Nitto ATP Tennis Finals; Stefanos Tsitsipas (Greece) celebrates as he breaks serve against Roger Federer (Switzerland) in the second set - Editorial Use Credit: Action Plus](https://c8.alamy.com/comp/2A9MD1X/arena-london-uk-16th-nov-2019-nitto-atp-tennis-finals-stefanos-tsitsipas-greece-celebrates-as-he-breaks-serve-against-roger-federer-switzerland-in-the-second-set-editorial-use-credit-action-plus-sportsalamy-live-news-credit-action-plus-sports-imagesalamy-live-news-2A9MD1X.jpg)
Arena. London, UK. 16th Nov, 2019. Nitto ATP Tennis Finals; Stefanos Tsitsipas (Greece) celebrates as he breaks serve against Roger Federer (Switzerland) in the second set - Editorial Use Credit: Action Plus
![London, UK. 08th Nov, 2019. Alexander ZVEREV of Germany during practice at the Nitto ATP Finals Tennis London MEDIA DAY at the O2, London, England on 8 November 2019. Photo by Andy London, UK. 08th Nov, 2019. Alexander ZVEREV of Germany during practice at the Nitto ATP Finals Tennis London MEDIA DAY at the O2, London, England on 8 November 2019. Photo by Andy](https://c8.alamy.com/comp/2A8EM4K/london-uk-08th-nov-2019-alexander-zverev-of-germany-during-practice-at-the-nitto-atp-finals-tennis-london-media-day-at-the-o2-london-england-on-8-november-2019-photo-by-andy-rowland-credit-prime-media-imagesalamy-live-news-2A8EM4K.jpg)
London, UK. 08th Nov, 2019. Alexander ZVEREV of Germany during practice at the Nitto ATP Finals Tennis London MEDIA DAY at the O2, London, England on 8 November 2019. Photo by Andy
![Tennis | Nitto ATP Finals 2019 | By The Numbers – How Thiem and Tsitsipas match up ahead of the singles final | Britwatch Sports Tennis | Nitto ATP Finals 2019 | By The Numbers – How Thiem and Tsitsipas match up ahead of the singles final | Britwatch Sports](https://britwatchsports.com/wp-content/uploads/2019/11/ATPF-2019-Thiem-Tsitsipas.png)
Tennis | Nitto ATP Finals 2019 | By The Numbers – How Thiem and Tsitsipas match up ahead of the singles final | Britwatch Sports
![17th November 2019 O2 Arena, London, England; Nitto ATP, Tennis Herren Tennis Finals; Dominic Thiem (AUT 17th November 2019 O2 Arena, London, England; Nitto ATP, Tennis Herren Tennis Finals; Dominic Thiem (AUT](https://www.imago-images.com/bild/sp/0044883737/w.jpg)
17th November 2019 O2 Arena, London, England; Nitto ATP, Tennis Herren Tennis Finals; Dominic Thiem (AUT
![Nitto ATP Finals | Stefanos Tsitsipas Beats Roger Federer To Reach The London Final | ATP Tour | Tennis Nitto ATP Finals | Stefanos Tsitsipas Beats Roger Federer To Reach The London Final | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/tsitsipas-london-2019-sf-1.jpg)
Nitto ATP Finals | Stefanos Tsitsipas Beats Roger Federer To Reach The London Final | ATP Tour | Tennis
![Nitto ATP Finals | Match Analysis: How Federer Broke Through Djokovic's Returning Wall | ATP Tour | Tennis Nitto ATP Finals | Match Analysis: How Federer Broke Through Djokovic's Returning Wall | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2019/11/14/21/15/federer-london-2019-thursday-serve.jpg)
Nitto ATP Finals | Match Analysis: How Federer Broke Through Djokovic's Returning Wall | ATP Tour | Tennis
![17th November 2019 02 Arena London, England; Nitto ATP, Tennis Herren Tennis Finals; Pierre Hugues Her 17th November 2019 02 Arena London, England; Nitto ATP, Tennis Herren Tennis Finals; Pierre Hugues Her](https://www.imago-images.com/bild/sp/0044871163/w.jpg)